Wrench



Dec. 13, 1927. 1,652,977 J. M. DE VILBISS WRENCH Filed Dec. 1-9. 1925INVENTOR,

Parasite Dec, 13, ieav 1 UMTEIBFSZZWES nsert? Par JOHN M. DEV1LBISS,'OFMODESTO, oALIFoRNIA.

wannoir. v

Application filed December 19, 1925. Serial No. 76,518.

handle portion and a cam portion, the latw ter retaining the worm in aninoperative position, when desired.

A further object is to provide a construc tion which may be employed ineither a wrench designed for turning a nut, or may be applied to a pipewrench.

With the foregoing and other objects in view, the invention consists inthe novel construction and arrangement of elements described,illustrated and claimed, it being understood that modifications may bemade within the scope of the claim, without departing from the spirit ofthe invention.

In the drawings forming a part of this application,- j V Figure 1 is aview in elevation, showing a portion of a wrench, and-showing in dottedline the resilient mounting of the worm" I ual manner. The rack 26 onthe shank 27 or jaw 25, is engagedjoy a Worm 28 carriedelement.

Figure 2 is a similar view, theworm ele-' ment having been thrown out ofoperative position, by the rotation of the axial member thereof, thismember carrying a cam end portion. 1

Figure 3 is a section on line 33 of Fig.

ure 1. 1 Figure 4 is a section 'on line 41-4 of Figure 2.

Figure 5 is a fragmentaryview in e1evation, showing the worm element asein-f ployed, in connection with a pipe wrench.

The stationary jaw of a rench is designated 10, and is formed on a shank11, one edge of the latter being provided with teeth constituting a rack12. V I

A movable jaw 13 includes a box member or sleeve 14 thru which the shank11 passes, and an opening is provided at.15 for the accommodation of aworm adapted for co operation with the rack 12.

:Ihe worm is loose with reference to an axial element 16, and the latteris provided with an offset portion 17 constituting a bandle orthumbmember, the opposite end of the element 16 carrying an offset portion 18constituting a device for retaining the worm out of engagement with thewrench 12. In

sr rrrcathis position the movable jaw may be rapidly positionedwithreference to the stationary aw. The axial element 16 is furtherprovided withv an ofi'set portion18, and said element 16 operating inopenings, such as 19,

and 21, when the latter are free to act for re- 'taining the worm inengagement with the rack. Then it is desired to retain the wormtemporarily out of engagement 'with the 1 rack, the element 17 isoperated, in order to throw the offset members 18 and 18 to the positionof Figures 2 and 4. I

The wrench thus constructed may be held acts under the influence ofcoiled springs 20 j and adjusted by one hand, while the other is freefor use in other connections, and in employing the tool in this manner,the.

thumb engages the element 17, for controlling the position thereof, itbeing understood .that the palm of the hand and the fingers engage thehandle, not shown, in the usual manner.

InFigure 5 the manner of applying the improvement to a pipe wrench isillustrated, the aws of 'which are designated 24 and 25, their serratedsurfaces diverging, in the us,

loosely bya shaft or stem29 constituting the axial element. This member2915 designed-.-

to carry offset portions, such as 18 and'1 8 previously described, theview however,iil-

lustrating the worm in engagement with the rack, so that the offsetportions extend toward'the observer, or project on the other I side,asthe case may be. The operation of thisworm willbe clear, when the,device is considered in connection with the form first described.

.meinber, rigid with reference to one of the jaws,'a worm adapted toengage the rack, and being rotatable with-referenceto the other aw, anaxial member loosely mounting the worm, jand oflset means carried bytending to move the axial member for throwing and retaining the worm outof engagement with the rack,

upon partial rotation of the axial member, resilient means engaging theaxial member,

positioned perpendicularly thereof for i111- lateral thrust on oppositeends, and

when its movement-is unobstructed, and a thumb member extending alongside of the rack, for imparting rotary movement to the 10 axial member.

In testimony whereof I afliX my signature.

JOHN M. DE VILBISS. V

